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It's an old instance, recently i have started facing this problem. 'ulimit -d unlimited' is there.As this instance is library client and library manager is on other AIX instance.
I got few weird thing that the amount of "ANR0408I Session NN started for server <Name> ... for library sharing" is just enormous.
I can see more than 32000 messages per hour in actlog.
Can you please help?

weird - can you see the devices in AIX? Are the devices operational? Are you root?
Seems your server tries to start, finds out it is a library client and tries to initialize the library (contacts the LManager) - but cannot fork threads for SAN operations - so it fails and starts another attempt - can be device problem, permission problem, memory problem ....
A lot of things has to be checked here ...

Hi ,
Sorry for late reply
Thank you for your suggestion
I had a deep investigation for the problem and found the both problem are not related to each other.
Multiple session to LM is caused by many select command ,those were running on LC server and asking for volume information to LM(each volume)
However san issue is related to some missing configuration at OS level.I'm taking a hold of it.
LM= Library Manager
LC = Li